Customs Stuff:
  * Harmonized Tariff Schedule: http://www.usitc.gov/tata/hts/bychapter/index.htm (US International Trade Commission)
  * US Census Bureau Schedule B (and search): http://www.census.gov/foreign-trade/schedules/b/
  * BIS Intro to Export Controls: http://www.bis.doc.gov/licensing/exportingbasics.htm
  * [[http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=ecfr&sid=59ee1d5eeb8f1d444ba88927fa1eaaff&rgn=div9&view=text&node=15:2.1.3.4.24.0.1.5.27&idno=15|Commerce Country Chart for Export Controls]]
  * [[http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=ecfr&sid=c5cc9a1c749a6f225283bdfa124431d0&rgn=div9&view=text&node=15:2.1.3.4.45.0.1.3.87&idno=15|Country Chart for Export Controls]]

  * Example from a Geiger Counter company: http://www.ludlums.com/index.php?option=com_multisitescontent&view=article&site_id=:master_db:&id=153&Itemid=64
